Pottery-jigger.



Zizemfac; I f7: #fn-fafa ZT i Z l Patented June 4, 1912.

J. CROSSLEY.

POTTERY JIGGBR.

APrLIoA'rIoN FILED AUG. 16, 1911.

1,028,549. Patented June4,1912.

2 SHEETS-SHEET 2.

JG-UMIIA PLMDGRAPN WASHINGTON. D. C.

V.TOSI-IPH CROSSLEY, 0F TRENTON, NEW JERSEY.

POTTERY-JIGGER.

Specification of Letters Patent. l

Patented June 4, 1912.

Applcation'led August 16, 1911. Serial No. 644,437.

To all whom t may concern.'

Be it known that I, JOSEPH CRossLnY, a citizen of the United States, residing at Trenton, in the county of Mercer and State of New Jersey, have invented certain new and useful Improvements in Pottery-Jiggers; and I do hereby declare the following to be a full, clear, and eXact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. v

My invention relates primarily to the art of ceramics, has especial reference to the manufacture of hollow ware, such as crucibles and the like, has for its object economy in the manufacture of such articles, and the invent-ion consists in certain improvements which will be fully disclosed in the following specification and claims.

In the accompanying drawings, which form part of this specification Figure 1 represents a vertical section partly in elevation of so much of a jigger as is necessary to illustrate my invention, showing the vprofile in position for forming a hollow art-icle. Fig. 2 is a like view showing the profile about to be removed from the article. Fig. 3 is an enlarged detail of t-he upper end of the profile and the latch. Fig. 4 isa front elevation of the profile and its supporting means. Fig. 5 is a like view of the upper part of the same on an enlarged scale, and Fig. 6 is a transverse section o-n line 6-6 Fig. 5 looking in the direction of .the

arrow.

Reference being had to the drawings and the designating characters thereon, the numeral 1 indicates the horizontal arm of a conventional crucible molding machine or jigger which is vertically movable on a col-` umn forming part of the machine.

2 indicates the revoluble chuck or mold holder, also of conventional form, 3 the molded Crucible or other vessel in the mold, and 4 the lining, all of which may be of any preferred type, and the vessel to be molded may be of any preferred dimensions.

5 indicates a bracket having a tubular socket member 6 thereon and is rmly secured to the arm 1.

7 indicates a vertical bar which extends into the socket 6 and is secured therein by screw-bolts 8, 8. The bar 7 is flattened on one side as shown at 9 in Figs. 5 and 6, and to the lower end of said bar and on the flattened side thereof is secured the skeleton profile 10, by a pivotv 11, to swing laterally on and cross the bar at its upper end. The outer edge of the profile is of the shape desired to be given to the article to be molded, and at its upper end is an arm `12 provided with a handle 13 for the operator to swing or manipulate the profile as required in entering and removing it and the ybar from the article.

14 indicates a longitudinally adjustable latch bar provided with slots 15, 16, to provide for adjustment and bolts 17, 18 for securingthe latch on the arm. In the upper edge of the bar 14, is a notch or slot 19, engaged by a vertically movable bar 20, for locking the latch and the profile in position. The bar 2O is pivot-ally supported on the member 6 at 21, is provided with a handle 22 at one end and an extension 23 at the opposite end to which one end of a spring 24 is attached, the opposite end being attached to bracket 5. The tension of this spring drawing up on the extension 23, keeps or holds the locking bar in engagement with the slot 19 in the latch-bar 14 and prevents accidentaly disengagement of they latch and consequent displacement of the proiile 10. The swinging or pivoted connection of the profile to the bar provides for the insertion and removal of the pro-Ele through the mouth of the mold and the vessel, the molding in one piece of hollow articles having comparatively small mouths or openings and results in considerable saving to the manufacturer, and the lateral adjustmentof the profile through the medium of the latchbar 14, provides for varying the thickness of the lining 4 of the crucible or otherarticle as desired.

Having thus fully described my invention, what I claim is 1. A jigger comprising a vertical supporting bar, a skeleton profile pivotally secured to said bar at its lower end and adapted to swing across the bar, and means detachably connected for securing the' profile at the upper end of the bar. p

2. A jigger comprising a vertical supporting bar, a skeleton profile pivotally secured to the lower end of and adapted to swing across said bar, and a detachable latch on the profile and engaging the upper end of the bar.

3. A jigger comprising a vertical supporting bar, a skeleton profile pivotally secured to the lower end of and adapted to swing acrossY said bar, a`longitudinallynadfi.V

justable lat-ch7 and means for securing said latch at the upper end of the bar.

l. A jigger comprising a vertical supporting bar, a skeleton profile pivotally secured to the lower end of and adapted to swing across said bar and provided with an arm at its upper end, a latch on said arm, and a locking member engaging said latch.

5. A jigger comprising a vertical supporting bar, a skeleton profile pivotally secured to the lower end of and adapted to swing across said bar and provided with an arm at its upper end, an adjustable latch on said arm,` a pivotally supported locking member engaging said latch, and means for holding said locking member in engagement withk the latch.

6. A jigger comprising a vertical supporting bar, a bracket supporting said bar, a profile detachable at its upper end and pivotally secured to the bar at its lower end, and an arm at the upper end of the prole,

alatch supported on said arm,and alocking bar engaging said latch.

7. A jigger comprising a vertical support, a pivotally supported skeleton profile detachable at its upper end and adapted to swing across said support, an arm at the upper end of the profile having a longitudinally movable latch thereon, a handle for swinging the prole, and a locking bar for engaging said latch.`

8. A jigger comprising a vertical supporting bar having a flattened side,"apro file pivotally secured to the lower Vend of and adapted to swing across said bar on said j,

Jflat-tened side, and means for locking the profile at its upper end. v y

In testimony whereof I aliiX my signature,V in presence of two witnesses. f

JOSEPH CROSSLEY.

VCopies of this patent may` be obtainedV for iive cents each, by addressing the "Commissioner of Patents,

Washington, D. C. 

